I do believe that most of the big states have adopted a “winner takes all” approach to the primary elections.
By Feb 5, Super Tuesday, there will have already been 1381 delegates up for grabs.
The winner "could" be crowned by Feb 5 and after only 28 states have had their primaries.
Duncan Hunter must stay in this race and try to become his state's favorite son, if for no other reason than to prevent this from being decided too early.
Of those 28 states, 13 are traditionally Rino Republican states, imho.
If a conservative is to emerge, he must do so quickly. Otherwise, the only way to stop the anti-life candidate will be with Romney.